# Doom Loop vs High Speed Rail Authority

The clearest difference is in-app purchases: Doom Loop at none against High Speed Rail Authority's 5. Doom Loop also leads on ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. High Speed Rail Authority sells 5 one-off in-app purchases. Doom Loop asks for nothing beyond the download.

## The numbers

| Metric | Doom Loop | High Speed Rail Authority |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.8 (4 ratings)](https://appshunter.io/ios/app/high-speed-rail-authority/id6797730855/reviews)** |
| Number of ratings | — | **4** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | — | Every 3 weeks |
| Monetization | — | Free with in-app purchases |
| Size | 6 MB | 39 MB |
| Requires iOS | **15.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 9+ |
| Developer | [Tom Hestas](https://appshunter.io/developer/1877086504) | [Mason Moran](https://appshunter.io/developer/6782451337) |

## What reviewers say

### Doom Loop

[App page](https://appshunter.io/ios/app/doom-loop-india/id6789718092)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### High Speed Rail Authority

[App page](https://appshunter.io/ios/app/high-speed-rail-authority/id6797730855)

Build and manage a high-speed rail network across realistic maps. Navigate terrain costs, reroute traffic, and survive political challenges to prove the viability of modern rail infrastructure.

**Highlights:** Build rail networks on real maps, Manage traffic rerouting and overloads, Navigate terrain costs and construction, Survive political and economic challenges, Three distinct global scenarios, Realistic city populations and traffic

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| United States world | $4.99 | one-time |
| Japan world | $4.99 | one-time |
| Europe world | $4.99 | one-time |
| Director's Pass | $4.99 | one-time |
| Support the project | $9.99 | one-time |


## Frequently asked questions

### Is Doom Loop free?

Doom Loop is free to download, with no in-app purchases.

### Is High Speed Rail Authority free?

High Speed Rail Authority is free to download, with in-app purchases available.

### Do Doom Loop or High Speed Rail Authority have ads?

High Speed Rail Authority shows ads; Doom Loop does not.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*